Hi kindly help me with the configuration, I have attached the diagram. i have connected two 7206 and two 2851 routers making the two 7206 as frame-switch and using serial ports back-to-back and i was able to ping the ip address assigned to the routers. Now, what configuration will i put to 7206 frame switch to access other routers, say from router A to B&C. Also, can I also use the 7206 to connect to router A since I used it as frame switch? thanks! pls. find attached diagram.